Navjivan express from Ahmedabad to Chennai leaves Ahmedabad at 6.30 a.m. and travels at 50 kmph towards Baroda situated 100 km away. At 7.00 a.m., Howrah-Ahmedabad express leaves Baroda towards Ahmedabad and travels at 40 kmph. At 7.30 a.m., Mr.Kiran the traffic controller at Baroda realizes that both the trains are running on the same track. How much time does he have to avert a head-on collision between the two trains?

Navjivan express from Ahmedabad to Chennai leaves Ahmedabad at 6.30 a.

1.	Navjivan express from Ahmedabad to Chennai leaves Ahmedabad at 6.30 a.m. and travels at 50 kmph towards Baroda situated 100 km away. At 7.00 a.m., Howrah-Ahmedabad express leaves Baroda towards Ahmedabad and travels at 40 kmph. At 7.30 a.m., Mr.Kiran the traffic controller at Baroda realizes that both the trains are running on the same track. How much time does he have to avert a head-on collision between the two trains?
A.	15 min
B.	20 min
C.	25 min
D.	30 min
Answer» C. 25 min